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anthropic/claude-sonnet-4.5

Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with im...

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64K max outputVision
Input $3.00/M · Output $15.00/M · Cache read $0.30/M · Cache write $3.75/M
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API details and access

Model Details

ProviderAnthropic
TypeLlm
Model IDanthropic/claude-sonnet-4.5

Capabilities

InputTextImage
OutputText
Context-
Max Output64,000
VisionSupported
Function CallingSupported

Access details

Messages API
Base URLhttps://api.sandbase.ai
API Endpoint/v1/messages
{
  "model": "anthropic/claude-sonnet-4.5",
  "system": "You are a helpful assistant.",
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ],
  "max_tokens": 512
}

Pricing

Input$3.00 / 1M tokens
Output$15.00 / 1M tokens
Cache read$0.30 / 1M tokens
Cache write$3.75 / 1M tokens

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